1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
#ifndef _ASM_POWERPC_MODULE_H
#define _ASM_POWERPC_MODULE_H
#ifdef __KERNEL__
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/list.h>
#include <asm/bug.h>
#include <asm-generic/module.h>
#ifndef __powerpc64__
/*
* Thanks to Paul M for explaining this.
*
* PPC can only do rel jumps += 32MB, and often the kernel and other
* modules are furthur away than this. So, we jump to a table of
* trampolines attached to the module (the Procedure Linkage Table)
* whenever that happens.
*/
struct ppc_plt_entry {
/* 16 byte jump instruction sequence (4 instructions) */
unsigned int jump[4];
};
#endif /* __powerpc64__ */
struct mod_arch_specific {
#ifdef __powerpc64__
unsigned int stubs_section; /* Index of stubs section in module */
unsigned int toc_section; /* What section is the TOC? */
#ifdef CONFIG_DYNAMIC_FTRACE
unsigned long toc;
unsigned long tramp;
#endif
#else /* powerpc64 */
/* Indices of PLT sections within module. */
unsigned int core_plt_section;
unsigned int init_plt_section;
#ifdef CONFIG_DYNAMIC_FTRACE
unsigned long tramp;
#endif
#endif /* powerpc64 */
/* List of BUG addresses, source line numbers and filenames */
struct list_head bug_list;
struct bug_entry *bug_table;
unsigned int num_bugs;
};
/*
* Select ELF headers.
* Make empty section for module_frob_arch_sections to expand.
*/
#ifdef __powerpc64__
# ifdef MODULE
asm(".section .stubs,\"ax\",@nobits; .align 3; .previous");
# endif
#else
# ifdef MODULE
asm(".section .plt,\"ax\",@nobits; .align 3; .previous");
asm(".section .init.plt,\"ax\",@nobits; .align 3; .previous");
# endif /* MODULE */
#endif
#ifdef CONFIG_DYNAMIC_FTRACE
# ifdef MODULE
asm(".section .ftrace.tramp,\"ax\",@nobits; .align 3; .previous");
# endif /* MODULE */
#endif
struct exception_table_entry;
void sort_ex_table(struct exception_table_entry *start,
struct exception_table_entry *finish);
#ifdef CONFIG_MODVERSIONS
#define ARCH_RELOCATES_KCRCTAB
extern const unsigned long reloc_start[];
#endif
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_MODULE_H */
|
